RT-Thread-[RT-Thread x 大学生夏令营] 温湿度传感报警系统RT-Thread问答社区

[RT-Thread x 大学生夏令营] 温湿度传感报警系统

发布于 2023-07-26 17:09:25 浏览：505 订阅该版

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# 简介
## 项目名称
温湿度传感报警系统

## 设计思路
项目使用RT-Thread系统和PSOC6开发板，实现一个温湿度报警系统。该系统通过wifi连接将数据上传至OneNET云，后经过前端开发，可以使数据清晰的展示。并且在温湿度高于或低于某一数值时，蜂鸣器就会报警。

## 项目的优势
利用简单的构建实现了对温湿度的实时监控，操作简单，成本较低。

# 流程图
![screenshot_image.png](https://oss-club.rt-thread.org/uploads/20230726/84ad0ae0839a64750e288164969c39a9.png.webp)

# 硬件部分
**PSOC6开发板**
![screenshot__411317954__dd739853af210b3f237328a96c5b6a86_1695963004_IMG_20230726_154833_0_wifi_0.jpg](https://oss-club.rt-thread.org/uploads/20230726/a7c2d0c6d101215b1891fead310ea3c2.jpg.webp)

**rw007**
![screenshot__1570564740__3c80a231f40149d9aa99e153622d216a_-1769682434_IMG_20230726_154912_0_wifi_0.jpg](https://oss-club.rt-thread.org/uploads/20230726/c59a34a2316501aa718da31f3e127e33.jpg.webp)

**ATH10**
![screenshot__621114156__57aeef6bb529070b999cf777d91f99a0_1757838911_IMG_20230726_154858_0_wifi_0.jpg](https://oss-club.rt-thread.org/uploads/20230726/c9dfeca8b4608f6cb2f0b19db36aae07.jpg.webp)

**蜂鸣器**
![screenshot__1936047950__315f0313eada38d4de3ea681bbd74341_1725515676_IMG_20230726_154844_0_wifi_0.jpg](https://oss-club.rt-thread.org/uploads/20230726/e467a98fa6b405eb59215e25158b93a2.jpg.webp)

# 软件部分
## 软件包配置

![screenshot_CJZEQV86ACW]IUNE3U2URN.png](https://oss-club.rt-thread.org/uploads/20230726/292818acaa170966b7ac9559466ee9db.png.webp)

**.onenet_upload_entry代码**
```c
static void onenet_upload_entry(void *parameter)
{
        rt_pin_mode(deep, PIN_MODE_OUTPUT);
        float t_l=10,t_h=40;//温度下限10上限40
        float hu_l=20,hu_h=65;//湿度下限20上限65

float hum,temp;
        aht10_device_t dev;
        const char *i2c_bus_name="i2c3";
        rt_thread_mdelay(2000);
        dev=aht10_init(i2c_bus_name);
        if(dev==RT_NULL)
        {
            rt_kprintf("The sensor initializes failure");
        }
        rt_pin_write(deep, PIN_HIGH);
        temp=aht10_read_temperature(dev);
        hum=aht10_read_humidity(dev);
        rt_thread_mdelay(1000);
    while (1)
    {
       hum=aht10_read_humidity(dev);
       rt_kprintf("humidity : %d.%d  %%\n",(int)hum,(int)(hum*10)%10);
       temp=aht10_read_temperature(dev);
       rt_kprintf("temperature: %d.%d C \n\n",(int)temp,(int)(temp*10)%10);
       rt_thread_mdelay(1000);

/*蜂鸣器报警*/
       if((int)temp<t_l||(int)temp>t_h)
       {
           beep2();
       }
       else if ((int)hum<hu_l||(int)hum>hu_h)
       {
           beep2();
       }
       /*上传数据*/
       onenet_mqtt_upload_digit("temperature", temp);
       rt_thread_mdelay(1000);
       onenet_mqtt_upload_digit("humidity", hum);
        if (onenet_mqtt_upload_digit("temperature", temp) ||onenet_mqtt_upload_digit("humidity", hum) < 0)
        {
            LOG_E("upload has an error, stop uploading");
            break;
        }
        else
        {
            LOG_D("buffer : {\"temperature\":%f C},{\"humidity\":%f%%}", temp,hum);
        }
        rt_thread_delay(rt_tick_from_millisecond(5 * 1000));
    }
}
```

## 前端开发
定时器代码
```html
setInterval(
    //设置定时器，7s更新一次
    function () {
        if (!getData())
            return;
        updateTemperature();
        updateHumidity();
        updateTH();
        },
    7000
);
```

定时器主要完成四个功能：

- getData()：获取最新数据，并加入到数据数组中
- updateTemperature()：更新温度刻度盘
- updateHumidity()：更新湿度刻度盘
- updateTH()：更新温湿度面积堆叠图

**updateTemperature()、updateHumidity()、updateTH()代码**
```html
function updateHumidity() {
    option = {
        tooltip: {
        formatter: "{a} <br/>{b} : {c}℃",
        },
        toolbox: {
            feature: {
              restore: {},
              saveAsImage: {},
            },
        },
          series: [
            {
              name: "当前湿度",
              type: "gauge",
              min: 0,
              max: 100,
              detail: { formatter: "{value}%" },
              data: [{ value: ydata_hum[ydata_hum.length - 1], name: "湿度" }],
              axisLine: {
                lineStyle: {
                  color: [
                    [0.5, "#ff6b6b"],
                    [0.65, "#ffa94d"],
                    [0.8, "#69db7c"],
                    [1, "#4dabf7"],
                  ],
                },
              },
            },
        ],
    };
    mCharts2.setOption(option);
}
```

## 获取最新温湿度数据

```html
function getData() {
    var xmlhttp = new XMLHttpRequest();
    xmlhttp.onreadystatechange = function () {
        if (this.readyState == 4 && this.status == 200) {
            console.log(this.responseText);
        }
    };
    xmlhttp.open("GET", "http://api.heclouds.com/devices/product_id/datastreams", true);
    xmlhttp.setRequestHeader("api-key", "your API Key");
    xmlhttp.send();
    ...
}
```

# 项目功能
## 数据页面展示
![screenshot_image.png](https://oss-club.rt-thread.org/uploads/20230726/8c98872e7b3949ebb7f097e1fa6d9099.png.webp)

## 实物图展示
![screenshot_image.png](https://oss-club.rt-thread.org/uploads/20230726/0f2ba8be484f99fe28e4edfae0531d5a.png.webp)

该项目实现了对温湿度的实时监控，通过ATH10获取温湿度数据，利用rw007将数据上传到onenet云端，通过前端开发将数据可视化。可以设定温湿度上下限，当温湿度不在范围内时，蜂鸣器工作，进行报警。

# 成果展示
## 代码开源
https://gitee.com/haikq/temperature-and-humidity-alarm

## 视频展示
https://www.bilibili.com/video/BV1Nx4y1R7ar